292 lines
9.8 KiB
Java
292 lines
9.8 KiB
Java
package net.minecraft.world.entity.monster;
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import java.util.Collection;
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import net.minecraft.nbt.CompoundTag;
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import net.minecraft.network.syncher.EntityDataAccessor;
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import net.minecraft.network.syncher.EntityDataSerializers;
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import net.minecraft.network.syncher.SynchedEntityData;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.sounds.SoundEvent;
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import net.minecraft.sounds.SoundEvents;
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import net.minecraft.tags.ItemTags;
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import net.minecraft.util.Mth;
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import net.minecraft.world.InteractionHand;
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import net.minecraft.world.InteractionResult;
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import net.minecraft.world.damagesource.DamageSource;
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import net.minecraft.world.effect.MobEffectInstance;
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import net.minecraft.world.entity.AreaEffectCloud;
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import net.minecraft.world.entity.Entity;
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import net.minecraft.world.entity.EntityType;
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import net.minecraft.world.entity.LightningBolt;
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import net.minecraft.world.entity.LivingEntity;
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import net.minecraft.world.entity.ai.attributes.Attributes;
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import net.minecraft.world.entity.ai.attributes.AttributeSupplier.Builder;
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import net.minecraft.world.entity.ai.goal.AvoidEntityGoal;
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import net.minecraft.world.entity.ai.goal.FloatGoal;
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import net.minecraft.world.entity.ai.goal.LookAtPlayerGoal;
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import net.minecraft.world.entity.ai.goal.MeleeAttackGoal;
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import net.minecraft.world.entity.ai.goal.RandomLookAroundGoal;
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import net.minecraft.world.entity.ai.goal.SwellGoal;
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import net.minecraft.world.entity.ai.goal.WaterAvoidingRandomStrollGoal;
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import net.minecraft.world.entity.ai.goal.target.HurtByTargetGoal;
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import net.minecraft.world.entity.ai.goal.target.NearestAttackableTargetGoal;
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import net.minecraft.world.entity.animal.Cat;
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import net.minecraft.world.entity.animal.Ocelot;
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import net.minecraft.world.entity.animal.goat.Goat;
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import net.minecraft.world.entity.player.Player;
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import net.minecraft.world.item.ItemStack;
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import net.minecraft.world.item.Items;
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import net.minecraft.world.level.Level;
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import net.minecraft.world.level.gameevent.GameEvent;
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import org.jetbrains.annotations.Nullable;
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public class Creeper extends Monster {
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private static final EntityDataAccessor<Integer> DATA_SWELL_DIR = SynchedEntityData.defineId(Creeper.class, EntityDataSerializers.INT);
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private static final EntityDataAccessor<Boolean> DATA_IS_POWERED = SynchedEntityData.defineId(Creeper.class, EntityDataSerializers.BOOLEAN);
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private static final EntityDataAccessor<Boolean> DATA_IS_IGNITED = SynchedEntityData.defineId(Creeper.class, EntityDataSerializers.BOOLEAN);
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private int oldSwell;
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private int swell;
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private int maxSwell = 30;
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private int explosionRadius = 3;
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private int droppedSkulls;
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public Creeper(EntityType<? extends Creeper> entityType, Level level) {
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super(entityType, level);
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}
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@Override
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protected void registerGoals() {
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this.goalSelector.addGoal(1, new FloatGoal(this));
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this.goalSelector.addGoal(2, new SwellGoal(this));
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this.goalSelector.addGoal(3, new AvoidEntityGoal(this, Ocelot.class, 6.0F, 1.0, 1.2));
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this.goalSelector.addGoal(3, new AvoidEntityGoal(this, Cat.class, 6.0F, 1.0, 1.2));
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this.goalSelector.addGoal(4, new MeleeAttackGoal(this, 1.0, false));
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this.goalSelector.addGoal(5, new WaterAvoidingRandomStrollGoal(this, 0.8));
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this.goalSelector.addGoal(6, new LookAtPlayerGoal(this, Player.class, 8.0F));
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this.goalSelector.addGoal(6, new RandomLookAroundGoal(this));
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this.targetSelector.addGoal(1, new NearestAttackableTargetGoal(this, Player.class, true));
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this.targetSelector.addGoal(2, new HurtByTargetGoal(this));
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}
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public static Builder createAttributes() {
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return Monster.createMonsterAttributes().add(Attributes.MOVEMENT_SPEED, 0.25);
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}
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@Override
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public int getMaxFallDistance() {
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return this.getTarget() == null ? this.getComfortableFallDistance(0.0F) : this.getComfortableFallDistance(this.getHealth() - 1.0F);
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}
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@Override
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public boolean causeFallDamage(float fallDistance, float multiplier, DamageSource source) {
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boolean bl = super.causeFallDamage(fallDistance, multiplier, source);
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this.swell += (int)(fallDistance * 1.5F);
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if (this.swell > this.maxSwell - 5) {
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this.swell = this.maxSwell - 5;
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}
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return bl;
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}
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@Override
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protected void defineSynchedData(net.minecraft.network.syncher.SynchedEntityData.Builder builder) {
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super.defineSynchedData(builder);
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builder.define(DATA_SWELL_DIR, -1);
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builder.define(DATA_IS_POWERED, false);
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builder.define(DATA_IS_IGNITED, false);
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}
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@Override
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public void addAdditionalSaveData(CompoundTag compound) {
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super.addAdditionalSaveData(compound);
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if (this.entityData.get(DATA_IS_POWERED)) {
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compound.putBoolean("powered", true);
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}
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compound.putShort("Fuse", (short)this.maxSwell);
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compound.putByte("ExplosionRadius", (byte)this.explosionRadius);
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compound.putBoolean("ignited", this.isIgnited());
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}
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@Override
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public void readAdditionalSaveData(CompoundTag compound) {
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super.readAdditionalSaveData(compound);
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this.entityData.set(DATA_IS_POWERED, compound.getBoolean("powered"));
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if (compound.contains("Fuse", 99)) {
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this.maxSwell = compound.getShort("Fuse");
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}
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if (compound.contains("ExplosionRadius", 99)) {
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this.explosionRadius = compound.getByte("ExplosionRadius");
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}
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if (compound.getBoolean("ignited")) {
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this.ignite();
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}
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}
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@Override
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public void tick() {
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if (this.isAlive()) {
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this.oldSwell = this.swell;
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if (this.isIgnited()) {
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this.setSwellDir(1);
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}
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int i = this.getSwellDir();
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if (i > 0 && this.swell == 0) {
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this.playSound(SoundEvents.CREEPER_PRIMED, 1.0F, 0.5F);
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this.gameEvent(GameEvent.PRIME_FUSE);
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}
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this.swell += i;
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if (this.swell < 0) {
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this.swell = 0;
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}
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if (this.swell >= this.maxSwell) {
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this.swell = this.maxSwell;
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this.explodeCreeper();
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}
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}
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super.tick();
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}
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@Override
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public void setTarget(@Nullable LivingEntity livingEntity) {
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if (!(livingEntity instanceof Goat)) {
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super.setTarget(livingEntity);
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}
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}
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@Override
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protected SoundEvent getHurtSound(DamageSource damageSource) {
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return SoundEvents.CREEPER_HURT;
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}
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@Override
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protected SoundEvent getDeathSound() {
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return SoundEvents.CREEPER_DEATH;
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}
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@Override
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protected void dropCustomDeathLoot(ServerLevel level, DamageSource damageSource, boolean recentlyHit) {
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super.dropCustomDeathLoot(level, damageSource, recentlyHit);
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Entity entity = damageSource.getEntity();
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if (entity != this && entity instanceof Creeper creeper && creeper.canDropMobsSkull()) {
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creeper.increaseDroppedSkulls();
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this.spawnAtLocation(level, Items.CREEPER_HEAD);
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}
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}
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@Override
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public boolean doHurtTarget(ServerLevel serverLevel, Entity entity) {
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return true;
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}
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public boolean isPowered() {
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return this.entityData.get(DATA_IS_POWERED);
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}
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/**
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* Params: (Float)Render tick. Returns the intensity of the creeper's flash when it is ignited.
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*/
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public float getSwelling(float partialTicks) {
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return Mth.lerp(partialTicks, (float)this.oldSwell, (float)this.swell) / (this.maxSwell - 2);
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}
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/**
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* Returns the current state of creeper, -1 is idle, 1 is 'in fuse'
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*/
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public int getSwellDir() {
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return this.entityData.get(DATA_SWELL_DIR);
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}
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/**
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* Sets the state of creeper, -1 to idle and 1 to be 'in fuse'
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*/
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public void setSwellDir(int state) {
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this.entityData.set(DATA_SWELL_DIR, state);
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}
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@Override
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public void thunderHit(ServerLevel level, LightningBolt lightning) {
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super.thunderHit(level, lightning);
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this.entityData.set(DATA_IS_POWERED, true);
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}
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@Override
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protected InteractionResult mobInteract(Player player, InteractionHand hand) {
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ItemStack itemStack = player.getItemInHand(hand);
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if (itemStack.is(ItemTags.CREEPER_IGNITERS)) {
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SoundEvent soundEvent = itemStack.is(Items.FIRE_CHARGE) ? SoundEvents.FIRECHARGE_USE : SoundEvents.FLINTANDSTEEL_USE;
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this.level().playSound(player, this.getX(), this.getY(), this.getZ(), soundEvent, this.getSoundSource(), 1.0F, this.random.nextFloat() * 0.4F + 0.8F);
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if (!this.level().isClientSide) {
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this.ignite();
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if (!itemStack.isDamageableItem()) {
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itemStack.shrink(1);
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} else {
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itemStack.hurtAndBreak(1, player, getSlotForHand(hand));
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}
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}
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return InteractionResult.SUCCESS;
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} else {
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return super.mobInteract(player, hand);
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}
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}
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/**
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* Creates an explosion as determined by this creeper's power and explosion radius.
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*/
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private void explodeCreeper() {
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if (this.level() instanceof ServerLevel serverLevel) {
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float f = this.isPowered() ? 2.0F : 1.0F;
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this.dead = true;
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serverLevel.explode(this, this.getX(), this.getY(), this.getZ(), this.explosionRadius * f, Level.ExplosionInteraction.MOB);
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this.spawnLingeringCloud();
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this.triggerOnDeathMobEffects(serverLevel, Entity.RemovalReason.KILLED);
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this.discard();
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}
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}
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private void spawnLingeringCloud() {
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Collection<MobEffectInstance> collection = this.getActiveEffects();
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if (!collection.isEmpty()) {
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AreaEffectCloud areaEffectCloud = new AreaEffectCloud(this.level(), this.getX(), this.getY(), this.getZ());
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areaEffectCloud.setRadius(2.5F);
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areaEffectCloud.setRadiusOnUse(-0.5F);
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areaEffectCloud.setWaitTime(10);
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areaEffectCloud.setDuration(areaEffectCloud.getDuration() / 2);
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areaEffectCloud.setRadiusPerTick(-areaEffectCloud.getRadius() / areaEffectCloud.getDuration());
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for (MobEffectInstance mobEffectInstance : collection) {
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areaEffectCloud.addEffect(new MobEffectInstance(mobEffectInstance));
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}
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this.level().addFreshEntity(areaEffectCloud);
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}
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}
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public boolean isIgnited() {
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return this.entityData.get(DATA_IS_IGNITED);
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}
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public void ignite() {
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this.entityData.set(DATA_IS_IGNITED, true);
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}
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/**
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* Returns {@code true} if an entity is able to drop its skull due to being blown up by this creeper.
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*
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* Does not test if this creeper is charged, the caller must do that. However, does test the doMobLoot gamerule.
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*/
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public boolean canDropMobsSkull() {
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return this.isPowered() && this.droppedSkulls < 1;
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}
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public void increaseDroppedSkulls() {
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this.droppedSkulls++;
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}
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}
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